Definition
An expression of sudden disregard for a previous plan or intention, indicating a decision to do something else.
管他呢，管它去的
I was supposed to go to bed early, but what the hell, I'll just watch one more episode.
我本來應該早點睡覺，但管他的，我要再看一集。
We were supposed to save money, but what the hell, let's go out for a nice dinner.
我們本來應該省錢，但管他的，我們出去吃頓好的吧。
I was supposed to stay home today, but what the hell, I'm going out for a walk now.
我今天本來應該待在家裡，但管他的，我現在要出去散步。